add fneg/fabs support for doubles
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24847 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Sparc/FPMover.cpp b/lib/Target/Sparc/FPMover.cpp
index feeadc5..af11eb8 100644
--- a/lib/Target/Sparc/FPMover.cpp
+++ b/lib/Target/Sparc/FPMover.cpp
@@ -84,27 +84,39 @@
bool Changed = false;
for (MachineBasicBlock::iterator I = MBB.begin(); I != MBB.end(); ) {
MachineInstr *MI = I++;
- if (MI->getOpcode() == V8::FpMOVD) {
+ if (MI->getOpcode() == V8::FpMOVD || MI->getOpcode() == V8::FpABSD ||
+ MI->getOpcode() == V8::FpNEGD) {
+ Changed = true;
unsigned DestDReg = MI->getOperand(0).getReg();
unsigned SrcDReg = MI->getOperand(1).getReg();
- if (DestDReg != SrcDReg || MI->getOpcode() != V8::FpMOVD) {
- unsigned EvenSrcReg = 0, OddSrcReg = 0, EvenDestReg = 0, OddDestReg = 0;
- getDoubleRegPair(DestDReg, EvenDestReg, OddDestReg);
- getDoubleRegPair(SrcDReg, EvenSrcReg, OddSrcReg);
+ if (DestDReg == SrcDReg && MI->getOpcode() == V8::FpMOVD) {
+ MBB.erase(MI); // Eliminate the noop copy.
+ ++NoopFpDs;
+ continue;
+ }
+
+ unsigned EvenSrcReg = 0, OddSrcReg = 0, EvenDestReg = 0, OddDestReg = 0;
+ getDoubleRegPair(DestDReg, EvenDestReg, OddDestReg);
+ getDoubleRegPair(SrcDReg, EvenSrcReg, OddSrcReg);
- I->setOpcode(V8::FMOVS);
- I->SetMachineOperandReg(0, EvenDestReg);
- I->SetMachineOperandReg(1, EvenSrcReg);
- DEBUG(std::cerr << "FPMover: the modified instr is: " << *I);
- // Insert copy for the other half of the double:
+ if (MI->getOpcode() == V8::FpMOVD)
+ MI->setOpcode(V8::FMOVS);
+ else if (MI->getOpcode() == V8::FpNEGD)
+ MI->setOpcode(V8::FNEGS);
+ else if (MI->getOpcode() == V8::FpABSD)
+ MI->setOpcode(V8::FABSS);
+ else
+ assert(0 && "Unknown opcode!");
+
+ MI->SetMachineOperandReg(0, EvenDestReg);
+ MI->SetMachineOperandReg(1, EvenSrcReg);
+ DEBUG(std::cerr << "FPMover: the modified instr is: " << *MI);
+ // Insert copy for the other half of the double.
+ if (DestDReg != SrcDReg) {
MI = BuildMI(MBB, I, V8::FMOVS, 1, OddDestReg).addReg(OddSrcReg);
DEBUG(std::cerr << "FPMover: the inserted instr is: " << *MI);
- ++NumFpDs;
- } else {
- MBB.erase(MI);
- ++NoopFpDs;
}
- Changed = true;
+ ++NumFpDs;
}
}
return Changed;